201780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 655200

約数和(自身を除く): 453420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 59, 60, 76, 90, 95, 114, 118, 171, 177, 180, 190, 228, 236, 285, 295, 342, 354, 380, 531, 570, 590, 684, 708, 855, 885, 1062, 1121, 1140, 1180, 1710, 1770, 2124, 2242, 2655, 3363, 3420, 3540, 4484, 5310, 5605, 6726, 10089, 10620, 11210, 13452, 16815, 20178, 22420, 33630, 40356, 50445, 67260, 100890, 201780]

約数ペア:

[(1, 201780), (2, 100890), (3, 67260), (4, 50445), (5, 40356), (6, 33630), (9, 22420), (10, 20178), (12, 16815), (15, 13452), (18, 11210), (19, 10620), (20, 10089), (30, 6726), (36, 5605), (38, 5310), (45, 4484), (57, 3540), (59, 3420), (60, 3363), (76, 2655), (90, 2242), (95, 2124), (114, 1770), (118, 1710), (171, 1180), (177, 1140), (180, 1121), (190, 1062), (228, 885), (236, 855), (285, 708), (295, 684), (342, 590), (354, 570), (380, 531)]